[INFO] cloning repository https://github.com/NavyD/leetcode-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NavyD/leetcode-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNavyD%2Fleetcode-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNavyD%2Fleetcode-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 45f8468da024ef1f6d29d6dfac9e3810eb70cbef [INFO] checking NavyD/leetcode-rust against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNavyD%2Fleetcode-rust" "/workspace/builds/worker-0/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/NavyD/leetcode-rust on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/NavyD/leetcode-rust [INFO] finished tweaking git repo https://github.com/NavyD/leetcode-rust [INFO] tweaked toml for git repo https://github.com/NavyD/leetcode-rust written to /workspace/builds/worker-0/source/Cargo.toml [INFO] crate git repo https://github.com/NavyD/leetcode-rust already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 9055ac11064d90c53e0ee54f1456ef942296cc42f6a9cd0afbc321713c10b6f6 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "9055ac11064d90c53e0ee54f1456ef942296cc42f6a9cd0afbc321713c10b6f6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9055ac11064d90c53e0ee54f1456ef942296cc42f6a9cd0afbc321713c10b6f6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9055ac11064d90c53e0ee54f1456ef942296cc42f6a9cd0afbc321713c10b6f6", kill_on_drop: false }` [INFO] [stdout] 9055ac11064d90c53e0ee54f1456ef942296cc42f6a9cd0afbc321713c10b6f6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 808fb9fe9e05be08779961f323845fdf35757259b6c19a818810b7a63ab894ae [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "808fb9fe9e05be08779961f323845fdf35757259b6c19a818810b7a63ab894ae", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Checking getrandom v0.1.14 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking leetcode-rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `head` [INFO] [stdout] --> src/reverse_nodes_in_k_group.rs:74:32 [INFO] [stdout] | [INFO] [stdout] 74 | pub fn reverse_k_group(head: Option>, k: i32) -> Option> { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_head` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `k` [INFO] [stdout] --> src/reverse_nodes_in_k_group.rs:74:61 [INFO] [stdout] | [INFO] [stdout] 74 | pub fn reverse_k_group(head: Option>, k: i32) -> Option> { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_k` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `head` [INFO] [stdout] --> src/reverse_nodes_in_k_group.rs:134:32 [INFO] [stdout] | [INFO] [stdout] 134 | pub fn reverse_k_group(head: Option>, k: i32) -> Option> { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_head` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `k` [INFO] [stdout] --> src/reverse_nodes_in_k_group.rs:134:61 [INFO] [stdout] | [INFO] [stdout] 134 | pub fn reverse_k_group(head: Option>, k: i32) -> Option> { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_k` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `head` [INFO] [stdout] --> src/reverse_nodes_in_k_group.rs:74:32 [INFO] [stdout] | [INFO] [stdout] 74 | pub fn reverse_k_group(head: Option>, k: i32) -> Option> { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_head` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `k` [INFO] [stdout] --> src/reverse_nodes_in_k_group.rs:74:61 [INFO] [stdout] | [INFO] [stdout] 74 | pub fn reverse_k_group(head: Option>, k: i32) -> Option> { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_k` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `head` [INFO] [stdout] --> src/reverse_nodes_in_k_group.rs:134:32 [INFO] [stdout] | [INFO] [stdout] 134 | pub fn reverse_k_group(head: Option>, k: i32) -> Option> { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_head` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `k` [INFO] [stdout] --> src/reverse_nodes_in_k_group.rs:134:61 [INFO] [stdout] | [INFO] [stdout] 134 | pub fn reverse_k_group(head: Option>, k: i32) -> Option> { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_k` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 17.43s [INFO] running `Command { std: "docker" "inspect" "808fb9fe9e05be08779961f323845fdf35757259b6c19a818810b7a63ab894ae", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "808fb9fe9e05be08779961f323845fdf35757259b6c19a818810b7a63ab894ae", kill_on_drop: false }` [INFO] [stdout] 808fb9fe9e05be08779961f323845fdf35757259b6c19a818810b7a63ab894ae